{
  "manageEntity": {
    "action": "Update",
    "entityId": "776888307",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd9bcc74104d7ae86ad57eed0c45a9624d7b96293869ac1e5087965f1ff9eaebe",
    "signature": "0x331b532505b996c42c5867b7450e003e60003f629fb293c41366f9ffd18308b0488c1e53cd2dc113ac15c0f59f863af81007a655547a059f1c5d0c718d24603e1c",
    "signer": "0xaa78c4733Bfa8f8db084FE55a9Ac81276d73670E",
    "userId": "776888307"
  }
}